CVE-2026-43035

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-43035
In the Linux kernel, the following vulnerability has been resolved: net: sched: cls_api: fix tc_chain_fill_node to initialize tcm_info to zero to prevent an info-leak When building netlink messages, tc_chain_fill_node() never initializes the tcm_info field of struct tcmsg. Since the allocation is not zeroed, kernel heap memory is leaked to userspace through this 4-byte field. The fix simply zeroes tcm_info alongside the other fields that are already initialized.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/1091b3c174441a52fdbb92e2fe00338f9371a91c Patch
https://git.kernel.org/stable/c/4ae5d23f51fb91d7d1140c6f1ba77ab0756054c3 Patch
https://git.kernel.org/stable/c/71a3eda7e850ae844cb8993065f4e410c11a46ce Patch
https://git.kernel.org/stable/c/903c3405cfcc7700260e456ab66a5867586c9e69 Patch
https://git.kernel.org/stable/c/906997ea3766c24fbbf9cc4bf17c047315bbd138 Patch
https://git.kernel.org/stable/c/d6db08484c6cb3d4ad696246f9d288eceba2a078 Patch
https://git.kernel.org/stable/c/e35f5195cd44ff4053fbc5d71ea97681728a0099 Patch
https://git.kernel.org/stable/c/e6e3eb5ee89ac4c163d46429391c889a1bb5e404 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
History

08 May 2026, 18:43

Type Values Removed Values Added
CWE CWE-908
First Time Linux linux Kernel
Linux
References () https://git.kernel.org/stable/c/1091b3c174441a52fdbb92e2fe00338f9371a91c - () https://git.kernel.org/stable/c/1091b3c174441a52fdbb92e2fe00338f9371a91c - Patch
References () https://git.kernel.org/stable/c/4ae5d23f51fb91d7d1140c6f1ba77ab0756054c3 - () https://git.kernel.org/stable/c/4ae5d23f51fb91d7d1140c6f1ba77ab0756054c3 - Patch
References () https://git.kernel.org/stable/c/71a3eda7e850ae844cb8993065f4e410c11a46ce - () https://git.kernel.org/stable/c/71a3eda7e850ae844cb8993065f4e410c11a46ce - Patch
References () https://git.kernel.org/stable/c/903c3405cfcc7700260e456ab66a5867586c9e69 - () https://git.kernel.org/stable/c/903c3405cfcc7700260e456ab66a5867586c9e69 - Patch
References () https://git.kernel.org/stable/c/906997ea3766c24fbbf9cc4bf17c047315bbd138 - () https://git.kernel.org/stable/c/906997ea3766c24fbbf9cc4bf17c047315bbd138 - Patch
References () https://git.kernel.org/stable/c/d6db08484c6cb3d4ad696246f9d288eceba2a078 - () https://git.kernel.org/stable/c/d6db08484c6cb3d4ad696246f9d288eceba2a078 - Patch
References () https://git.kernel.org/stable/c/e35f5195cd44ff4053fbc5d71ea97681728a0099 - () https://git.kernel.org/stable/c/e35f5195cd44ff4053fbc5d71ea97681728a0099 - Patch
References () https://git.kernel.org/stable/c/e6e3eb5ee89ac4c163d46429391c889a1bb5e404 - () https://git.kernel.org/stable/c/e6e3eb5ee89ac4c163d46429391c889a1bb5e404 - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*

01 May 2026, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-01 15:16

Updated : 2026-05-08 18:43

NVD link : CVE-2026-43035

Mitre link : CVE-2026-43035

CVE.ORG link : CVE-2026-43035

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-908

Use of Uninitialized Resource